CS250813B1 - Electrooptical integrated switch with progressive wave - Google Patents

Abstract

Electrooptical integrated switch with progressive wave falls into the field of optics. Purpose of electrooptical integrated the switch is an extension of portable capacities fiber optic communication systems. This purpose is achieved by involving the system electrodes consisting of symmetric lines (A, B, E and F) that are located on an electro-optical support (10) with an optical waveguide system (7, 8 and 9) stored along the center electrode (6) symmetric coplanar conduction (A, B, E and F) with input, part (C, E) and output the electrode part (F, D) is formed without reflection asymmetric coplanar management. Electrooptical integrated switch with a gradual wave she can find wide use of not only optical communication with high capacity transmitted information, but especially in the field instrumentation and optical diagnostics transmission systems with option vysetrovonio spectral choristers tronsformation from time to time when reduced energy intensity.

Description

(54) Electro-optical integrated waveform switch

Electro-optic integrated waveform switch falls within the optics area. The purpose of the electro-optic integrated switch is to extend the portable capacities of fiber optic communication systems. This is accomplished by engaging an array of electrodes formed by symmetrical coplanar lines (A, B, E, and F) that are disposed on an electro-optical substrate (10) with an optical waveguide system (7, 8 and 9) disposed along the central electrode (6). ) symmetric coplanar lines (A, B,

E and F), wherein the electrode inlet, part (C, E) and outlet (F, D) are formed by a non-reflective non-symmetrical coplanar line. Electrooptical integrated waveform switch can find wide use not only in the field of optical communications with high capacity of transmitted information, but especially in the field of instrumentation and diagnostics of optical transmission systems with the possibility of examination of spectral chorecteristics by time-tronsformation with reduced energy intensity.

I

BACKGROUND OF THE INVENTION The present invention relates to a progressive wave integrated circuit electro-optical switch comprising a symmetrical coplanar line-shaped switching circuit and an unbalanced coplanar line-like input / output circuitry.

The prior art Y-branched dielectric waveguide electro-optical switches utilize a switching electrode system forming a centered element. The switching electrodes consist of a pair, respectively. three electrode elements.

The two-electrode TE and TM mode switches overlap a portion of the input waveguide separated from the electrode by a dielectric optical intermediate door.

The three-element electrodes allow switching of exclusive TM mode and are less energy-intensive compared to the two-element electrodes. The disadvantage of these switches is a considerable limitation of the switching speeds due to the capacity of the electrode structure.

The above-mentioned disadvantage is substantially eliminated by the electro-optical integrated waveform switch according to the invention, which consists of a system of electrodes consisting of a symmetrical copolymer line placed on an electro-optical substrate with an optical waveguide system positioned along the central electrode of the symmetrical coplanar line. the electrode outlet portion is formed by an reflective-matching unsymmetrical coplanar line.

The main advantage of an electro-optic integrated waveform switch is that it allows the conductive electric signal to interact with a dielectric waveguide located in a collinear line with the structure of the switch formed by a symmetrical coplanar line in the switch itself, thereby extending their interaction time in the vellni region. high switching speeds.

In the accompanying drawings, FIG. 1 and 2 show schematically the mutual arrangement of the optical and electro-optical circuits of an electro-optical integrated Y-brancher with progressive wave, FIG. 3 shows the electrical circuit structure of the switch with input and output lines,

According to FIG. 1 and 2, the three-element coplanar line electrode structure of the switch is disposed on the surface of a dielectric substrate 10 formed by a Y-branched dielectric waveguide 2, 6 and 2 such that the center guide electrode divides the optical dielectric waveguide input section 2 into two equal portions. and II, which at the output of the switch branch out into belts g and 2 forming a waveguide Y-branching circuit. According to FIG. 3 the actual section of the switch consists of a coplanar line A, g, g, F with a pair of conductive halves A, B and g, F arranged symmetrically along the micro-pebble center conductor which thus allows to adjust the electric field intensity of the switch signal to the waveguide environment in two mutually opposite directions. The coplanar line A, g, E, F is coupled by a pair of coplanar line impedance-matching section of the switch line to the outer circuitry through the transition of the coaxial line to the microstrip placed orthogonally to the line direction A, g, g, F.

The switching signal 1 enters by passing a coaxial line on the microstrip into an electric circuit of an electro-optical prepressor through an input circuit C, g consisting of an input line section 2, a homogeneous impedance line section 2 and a transition line section 1 allowing the optical waveguide to be transferred. a 90 ° axis of the switching line and adjusting the width of the center conductor of the symmetrical coplanar line section & to the 1: 100 spool of the section 2 wire with an anchoring adaptation of the switching line to the outer circumferences. By the same line system F, the signal g leaves the electrical circuit of the switch.

The electrodes of the electro-optic switch thus arranged allow for the generation of a progressive wave and thereby increase the time of exposure of the switching signal of the collinear advancing with the optical wave guided by the dielectric conduction, which allows a substantial reduction in electrical power while increasing the switching speed. The switching signal at the input i and output 2 of the electrode system passes through the transition of the coaxial line to the microstrip, which makes it possible to connect the switching system to the generator, respectively. impedance-free line termination.

The use of a microwave coplanar line to implement an electro-optical switch with progressive wave guarantees for optical systems in the form of Y-branch, respectively. with an Ieh-Zehnder interferometer, to achieve switching times in the region of 10 seconds, which allows their use not only in the field of optical communications with a high capacity of transmitted information, but especially in the field of instrumentation and diagnostics of optical transmission systems. from time domain with reduced energy intensity.

Claims (1)

OBJECT OF THE INVENTION Electro-optic progressive-wave switch, characterized in that it consists of a set of electrodes consisting of a symmetrical coplanar line (A, B, E, F), placed on an electro-optical substrate (10) with an optical waveguide system (7, 8, 9) disposed along the central electrode (6) of the symmetrical coplanar line (A, B, E, F), wherein the inlet part (C, E) and the outlet part (F, D) of the electrodes are formed by an reflectlessly matching unsymmetrical coplanar line.